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UC2842A Datasheet(PDF) 5 Page - Texas Instruments

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Part No. UC2842A
Description  Current Mode PWM Controller
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
Logo TI - Texas Instruments

UC2842A Datasheet(HTML) 5 Page - Texas Instruments

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APPLICATIONS DATA (cont.)
Open-Loop Laboratory Test Fixture
UC1842A/3A/4A/5A
UC2842A/3A/4A/5A
UC3842A/3A/4A/5A
Output Saturation Characteristics
Error Amplifier Open-Loop Frequency Response
Oscillator Section
Oscillator Frequency vs Timing Resistance
Maximum Duty Cycle vs Timing Resistor
High peak currents associated with capacitive loads necessi-
tate careful grounding techniques. Timing and bypass capaci-
tors should be connected close to pin 5 in a single point
ground. The transistor and 5k potentiometer are used to sam-
ple the oscillator waveform and apply an adjustable ramp to
pin 3.
5


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